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Mathematics, 25.04.2021 23:40 chem1014

A group of 20 students includes 5 students in sixth grade, 10 students in seventh grade, and 5 students in eighth grade. Each student's name and grade are written on an mdex card and placed in a bag. A card is randomly selected from the bag. What is the probability that a seventh grader's name will be selected, P(seventh grader)?​

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A group of 20 students includes 5 students in sixth grade, 10 students in seventh grade, and 5 stude...
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